“The double-hung system was always designed as a ventilation method, so you could partially open the bottom and top so the cool air would come through the bottom and hot air exit the top,” Dr Schrapel said.

“This house has the most fantastic cross-ventilation,” Dr Henningsen added.

As it was originally built for Adelaide’s wealthy, the building had an intricate system of pulleys and bells to summon servants to the different rooms.

In honour of those who originally served their masters on the site, Dr Henningsen adapted a mechanism for their door bell.

Dwarfed by surrounding high-rises, Adelaide’s Stock Exchange building makes up in history what it lacks in size. Opened in 1901, the Edwardian/Federation-style building was the operational home of the exchange until 1991.